780The Department requests to be informed whether the plan for placing mine barrier across North Sea on Aberdeen –Egersund line has approval of Admiralty. It is believed that the great experience of British naval forces, in No[r]th Sea operations and their experience in naval mining during present war,put them in best position to dec decide whether in opinion of Admiralty it is the best scheme in sight for limiting operations of enemy submarines provided that strait of Dover can be effectively closed to passage of submarines which if possible in opinion of Department should be done at earli earliest possible date. 21020.